Container closure



Jan. 3, 1950 n. H. HoRNlNG 2,493,671

CONTAINER CLOSURE Filed Dsc. 4, 1946 2 Sheets-Sheet 1 TIE- l- BYM Jan.3, 1950 R. H. HQRNING 2,493,671

CONTAINER CLOSURE Filed Dec. 4, 1946 2 Sheets-Sheet 2 INVENTpR. RaymondH. Harn/)gy B Awys.

Patented Jan. 3, 1950 CONTAINER CLOSURE Raymond H. Hoi-ning, Fulton, N.Y., asslgnor to Oswego Falls Corporation, Fulton, N. Y., a corporationof New York Application December 4, 1946, Serial No. 714,099

(Cl. 22S-5.5)

Claims. l

This invention relates to end closures for containers and moreparticularly to containers formed of sheet fibrous material, such aspaperboard, and the end closure being sealed tothe container by adhesivematerial.

The invention has as an object an end closure for a container which canbe quickly and conveniently applied to the top edge of the container andsealed thereto in liquid tight relation, the end closure embodying astructure by which a portion of the end closure can be convenientlymoved from the container to provide a pouring opening for the removal ofthe contents of the container.

The invention consists in the novel features and in the combinations andconstructions hereinafter set forth and claimed.

In describing this invention, reference is had to the accompanyingdrawings in which like characters 'designate corresponding parts in allthe views.

Figure 1 is a bottom plan view of an end closure for a container,rectangular in cross section, embodying my invention.

Figure 2 is a perspective view illustrating the closure applied to thetop of a container.

Figure 3 is a view taken on line 3-3, `Figure 2;

Figure 4 is a bottom plan view of an end closure for a cylindricalcontainer.

Figure 5 is a perspective view illustrating the closure in Figure 4applied to the top of a container.

Figure 6 is a view taken on line 6 6, Figure 5.

The closure consists of a flat blank Ill of sheet fibrous material, suchas paperboard, and of a dimension exceeding that of the container towhich it is to be applied whereby, upon application, the marginalportion I I of the blank is folded to form a ange engaging thecontainer. The inner surface of the blank is coated with an adhesivesubstance operable to seal the blank, or p the marginal flange portionthereof, to the container. Preferably,`the marginal foldable portion isdefined by a score line I2 extending parallel, or concentric, with theedge of the blank. Where the end closure `is to be applied to acontainer, rectangular in cross section, the marginal portion II may beprovided with an additional.

score I3, and the corners notched to provide foldable panels whichform,l when folded, an inverted channel having inner and outer walls I5,I6, along each side of the closure to .receive the contiguous top edgeportion of the container I1 engaging the same internally and externally,see Figures 2 and 3.

2 The corners of the blank are preferably notched, or cut out, so thatthe adjacent ends of the marginal panels abut when the panels have beenfolded into the channel formation during the application of the closureto the top of the container and, in the case of the rectangular closure,the score line I2 is spaced inwardly from the notched corners leaving aportion I8 where the inner walls I5 of the channel formation engage thecorners of the container.

The coating on the inner surface of the blank is preferably a heatscalable thermoplastic adhesive which is effective to seal the flange,or

'channel formation, to the top of the container upon the application ofheat and pressure.

A sheet 20 of uncoated,` or non-sealable, material, such as metal foil,is secured to the inner surface of the blank and overlies a part of themarginal portion of the blank.

When the closure is applied to the container, that part of the marginalportion to which the non-sealing sheet 20 is affixed is thus preventedfrom sealing to the adjacent or contiguous top edge portion of the body.This portion can accordingly' be subsequently raised from the containerto form a pour opening. If the closure is of rectangular formation, asshown in Figures 1 to 3, the sheet 20 is affiired to a corner portion ofthe blank and overlies at least a portion of the marginal panelsadjacent to that corner of the blank, see Figure 1, and the blank may beprovided with a score line 2l extending diagonally across the cornerportion to which the sheet 20 is affixed and terminating at its ends inthe scores I3. This score 42| serves to more specifically dene themovable portion of the closure and renders the opening of the containersomewhat more convenient. Y

The closure described is shipped to the dairy, or other packer, and isapplied by a suitable head eiective to insert the closure in the openend of the container and fold the marginal portion into engagement withthe top of the container, and apply heat and pressure thereto toeffectively seal the flange of the closure to the container.

What I claim is:

1. An end closure for a container comprising a flat blank coated on theinner side with a subf stance operable to seal the blank to thecontainer,

the marginal portion of the blank being foldable to form a flangeportion engaging the side wall of the container, and a sheet ofnon-scalable material fixedly secured to the inner surface of the blankand overlying a part of said foldable portion.

2. An end closure for a container formed oi sheet fibrous materialcomprising a. ilat blank of sheet material having a marginal portionadapted to engage the side wall of the container, the inner surface ofthe blank being coated with a substance operable to seal said marginalportion to the container, and a sheet of non-scalable mafterial fixedlysecured to said inner surface of the blank and overlying part of saidmarginal portion. f

3. An end closure for a container rectangular in cross sectioncomprising a flat blank coated on the inner vside with a substanceoperable to seal the blank to a container, the marginal portion of saidblank being provided with score lines extending parallel to the edge ofthe blank and defining foldable portions forming an inverted channel toreceive the top edge portion of the container, and a sheet ofnon-scalable, non-wicking, material secured to the inner surface of theblank and overlying a portion of said channel.

4. An article of manufacture,xan end closure for a container rectangularin cross section, said lying a portion ofthe. channelsadjacent saidAcor-v ner, the exposed sealable. f 5. An end closure for a containerrectangular in cross section comprising a flat blank formed of iibrousmateriaLsaid blank beingv coated on its inner surface with afsubstanceoperable upon the application of heat and pressure to seal the closureto the top edge. of the container, said blank being provided with scorelines in the marginal portion of the blank extending parallel to theedge of the blank and dening foldable portions forming an invertedchannel along each side of the blank to receive ythe top edge of thecontainer, a sheet of metal foil xedly secured in one corner portion ofthe blank and overlying said foldable ,portions adjacent thecorner, the

exposed surface of said foil being uncoated.

RAYMOND H. HORNING.

REFERENCES CITED The following references are of recordin the me of thispatent:

UNITED STATES PATENTS i `Number Name v Date 1,800,143 Hughes Apr.'7,1931 2,302,083 Wilcox Nov. 17, 1942 2,381,508 Moore Aug. '7, 1945Brooks Apr. 16, 1946 surtaceroi'said sheet being non-

